Lock



s. SEGAL May 13,1930.

2 Shee'ts-S heet 2 Lock Filed April 18. 1922 INVENTOR u Im m L. E A f m Mm 6 M L r M ,w M a Patented May 13, 1930 UNITED'STATES PATENT oFFIcE SAMUEL SEGAL, OF NEW'YORK, N. Y., ASSIGNOR, 'B Y MESNE ASSIGNMENTS, -'1O SEGAI: LOCK '& HARDWARE (30., ING., F NEW YORK, N. Y., CORPQRATION OF NEW YORK LOCK Application filed April 18,

My invention relates to" looks having a locking bolt adapted to enter a suitable keeper being applicable to rim locks, mortise locks,

I or locks' of various other styles.

The principle object of the invention is the production of a lock of simplicity of construction which shall have spherical members such as balls associated with the locking bolt which shall provide additional locking means serving, in conjunction with said locking bolt, to

prevent an unauthorized manipulation or opening of the lock.

A further object of the invention is the production of a lock of the above type which shall have included in the mechanism thereof a supplemental bolt adapted to actuate the aforesaid, spherical elements.

A still further object of the invention is the production of a lock of 'the pin tumbler type which shall be provided with novel and simple means permitting theadjustment of the position-of the cylinder whereby the lock tive of its thickness but'the adjustment may not be effected unless the key plug been rotated by theproper key to a predetermined position.

To the above and other ends my invention consistsiin the novel parts andcombinations thereof hereinafter more particularly described and then specified in the claims. 1

' In the accompanying drawing showing .a practical embodiment of the invention: Fig. 1 is a section taken through my improved lock as applied to a. door.

Fig. 2 is a horizontal section on the line 2 2 of Fig. 1.

- Fig. 3 is a horizontal section on the line,

' 3-3 of Fig. 1.

Fig. 4 is a vertical cross-section on the line 4-4 of Fig. 2. y Fig. 5 is oa front elevation of the supple J mental bolt.

. Fig. 6 is an end view of the supplemental bolt shown in Fig. 5.

Fig. 7 is a section taken through a modified b0 form of lock.

may be easily installed on any door irrespec-v bolt which is adaptedto be projected through portion 9 of said locking bolt is provided ad: jacent one side thereof with a reduced plate acts as a support therefor. The ,said'arms are provided with ribs 12 and their ends with 1922. Serial No. 554,534. 4 v

, Fig. 8 is a front elevation of the lock with the cover plate of the casing removed.

Fig. 9 is a vertical section on the line 99- p of F ig. 8. i I Fig. 10 is a vertical section taken through the locking bolt and supplemental bolt.

Referring in detail to the several figures of the. drawing:

1 indicates adoor or other closure and 2 the door frame on which which is mounted by suitable screws (not shown) a keeper housing 3 provided with the usual openiiig .4 adapted to receive a locking bolt to be presently described. A. lock casing which is indicated at 5 and which is provided with a removable cover plate 6 is fastened to the door 1 adjacent its edge and the keeper housing. 3. by screws (not shown) which pass through thecasing, cover plate and into the door.

Mounted on the lock-casing is an operating handle or knob 7 the shank of which is sup-' ported within a bearing 8. having a squared exterior surface whichlbearing is fastened to 1 \i the inner side of the front wall of the casing.

9 indicates the body portion ofa locking 7 the slot 4 in the keeper housing and which is supported at its forward end by a slot '10 in the end wall of the lock casing. 'Said body 10 preferably integral therewith and the inner end of which is slotted to form arms 11 slidably engaging the squared bearing 8 which outwardl extending lugs 13. The body 9 of the loc ing bolt is also provided with horizontal bores 14 as well as transverse bores 15 communicating therewith. Each of said transverse bores holds two spherical members or balls 16 which are retained therein and are prevented from falling outwardly therefrom by headings 17 formed on the metal of the bolt adj acentthebores but'which permit the balls to protrude outwardly from the bores for a certain distance, not quite halfway, as shownin Figs. 1 and 4:. The body 9 of the locking bolt is also provided withshoulders 18 adapted ;to engage theend wall of the lock casing to prevent the bolt from being completely projected out of thecasing.

19 indicates the body portion of a supplemental bolt which is provided with forwardengage the ribs 12 of the arms 11. A compression spring 24 carried within a suitable receptacle or bore in the body 9 of the locking bolt engages a side of the body 19 of the supplemental bolt and tends by its action to slide said supplemental bolt inwardl within the lock casing whereby the ends 0 the arms 23 will engage the lugs 13.

. Secured to theinner end of the shank of the knob 0r handle 7 and rotatable therewith is an arm 25 to the end of which is pivoted one end of a curved link 26,:as by a pivot 26, said arm being also provided with a walled recess 27 open at its lower side as shown in Fig. 2. The other end of said curved link is pivoted to a pin 28 carried by the body 19 of the supplemental bolt. -Saidbody 19 is also provided with upper and lower pins 29 and 30 respectively and the curved link 26 is provided with a pin 31. A spring 32 encirclesthe pin 28 with its ends bearing against the pins 29 and 31,

said spring acting to retain the link 26 in the position shown in Fig. 2 or in the position shown in dotted lines in that figure with the pivots or pins 26' and 28in horizontal align. ment. The curved link 26 is also-provided with an extension 33 adapted to engage the pin 30 to limit the pivotal movement of said link on the pins orpivots 26 and 28. In some cases it is desirable to have the lower portions of the transverse bores 15 inclinedinwardly towards thecenter thereof as shown at 34in dotted lines in Fig. 4 so that the spherical members or balls 16 in each bore will tend to move or fall towards each other by gravity unless they are forced or spread outwardly away from each other by the plug members 20 as will be hereinafter explained.

The cover plate 6 of the lock casing is provided with two outwardly extending rods 35 riveted thereto and having'a series of notches 36 therein. These rods protrude within an annular opening 37 cut through the door 1 and receiving the cylinder 38 of a conventignal pin tumbler lock which is provided with the ordinary face plate 39 carrying an escutche'on ring 40. Mounted in cylinder 38 is a key plug 41 to which is connected a spindle 42 supported in a. rotatable bearing 43 mounted in the cover plate 6 of the lock casing. The innerend of said spindle carries an operating finger 44 on which is mounted a roller stud 45 engaging within the walled recess 27 on the arm 25.

A portion of the key plug 41 is flattened at opposite sides thereof as at 46 which sides are adapted to register with suitable slots 47 cut through opposite sides of the cylinder 38. The cylinder 38 is also provided with two pairs of oppositely disposed perforated heads 48, the heads of each pair being spaced apart from each other-and each pair slidably receiving one of the rods 35, whereby the cylinder is supported on said rods. A U-shaped spring 49 partially encircles the cylinder 38 intermediate each pair of heads 48 and is supported within the slots 47 thereof and engages the key plug 41. Said spring extends upwardly through the space intermediate each pair of heads 48 and is provided with looped portions 50 and arms 51 extending downwardly therefrom and adapted to en- 'gage the notch-es 36 in the rods 35.

- The position of the cylinder 38 may be adjusted on the rods 35 for any thickness of the door to which the device is to be applied.

l/Vhen it is applied to a door having a thickness of that shown in Fig. 1 the cylinder is in the position shown on said rods, theface plate 39 being substantially flush with the outer surface of the door and the arms 51 of the spring engaging in notches 36 adjacent the forward ends of the rods 35. l/Vh'en the'key plug has been rotated by means of a suitable key to the position shown in Fig. 3 the high or rounded portion of said key plug spreads the spring outwardly in such manner that the end portions of the spring are compressed and a small space obtains intermediate the arms 51 and the body of the spring making a further compression of the end portions of the spring and removal of the arms 51 from the notches impossible. This removal may only be effected by rotation of the key plug through an angle of 90 whereby the spring will expand and bear against theflattencd sides 46 of the key plug. The spring 49 therefore acts as a lock-to prevent adjustment of the position of the cylinder on the rods 35 until the proper key has been inserted in the key plug and the key plug rotated to the proper position. WVhen so rotated the ends of the spring may be compressed manually by pressure applied laterally to either side of the looped portions 50 to release the arms 51 thereof from engagement with the notches 36, thus permitting the cylinder 38 to be slid on the rods 35 into a new position. When the proper position has been secured the key plug is again rotated through 90 by means of the proper key whereupon the arms 51 Wlll be locked against removal from the new notches which they engage. I have shown by the dotted line 52 in Fig. 1 the outer surface of a door of smaller thickness than tlie door shown in full lines in that figure and I' have also shown in dottedlines the face plate 39 and heads 48in the position which they would assume when the device is applied to such door.

that even if it were possible to jimmy the device and reach the locking bolt and force it rearwardl .within the lock casing a slight distance the alls 16 which protrude partially from the bores 14 would engage that portion of the keeper housing adjacent the slot 4 therein to efiectively. prevent a complete withdrawal of said locking bolt from the keeper housing. I

The locking bolt may be withdrawn from the keeper housing by operation or rotation of the handleor knob 7 in the proper direction. Upon the beginning of the rotation thereof the curved link 26. is swung on its p1v0ts 26' .and 28 against the action of the "spring 32 and the pressure of the spring 26 against the supplemental bolt acts to force said bolt inwardly until the inner ends thereof contact with lugs 13. This partially re tracts the plugs 20 within the bores 14 and releases the bevelled ends 21 from engagement with the balls 16. Further rotation of the knob or handle 7 retracts theniain locking bolt carrying the supplemental bolt there with within the casing in an obvious manner whereby the locking bolt is entirely with drawn from the keeper housing and the door may be swung open. As the main bolt is withdrawn. from the keeper the balls 16 strike against the wall of the keeper adjacent the slot 4 which acts to force the balls in wardly within the transverse bores 15 and towards each other, thus permitting the lock ing bolt to be withdrawn without interference from the balls. If thelower portion of the bores 15 islinclined inwardly as shown at 34 in Fig. 4 the balls 16, as soon as the bevelled ends 21 of the plugs-2O are disengaged therefrom, will roll centrally towards each other by gravity and into engagement with each other which will prevent the balls from strikcurved link 26 and other adjacent parts take the position shown in dotted lines in Fig. 2.

To lock the'- door and project the locking bolt within the keeper housing the handle or knob 7 is rotated in an opposite direction.

This swings the curved link on its pivots to project the locking bolt forwardly. The supplemental bolt travels simultaneously with the locking bolt, the spring 24 acting to momentarily retain the ends of arms 23 in engagement with the lugs 13 and until the end of the locking bolt enters the keeper housing. When the shoulders 18 of the locking bolt engage the end wall of the lock casing, however, the plug members 20 of the supplemental bolt areprojected within the bores 14 of the locking bolt and the bevelled ends of said plugs are forced intermediate the balls 16 and act to spread them outwardly into the position shown in Fig. 4.

It is manifest that the locking and unlocking movements just described may be just as effectively procured by means of the proper key inserted in the key plug 41 anda rotation of said key plug inasmuch as said plug is connected, as heretofore described, with the arm 25 through the spindle 42, finger 24, roller stud 45 and walled recess 27.

In the modification illustrated in Figs. 7 to 10 inclusive" the forward end or body of the main locking bolt which is indicated at 52 is substantially I-shaped while the rear end of the bolt is slotted as at 53 to form arms 54 slidably engaging the squared bearing 8 for the handle or knob 7. The web portion of the .sides of the body of the locking bolt and in said indentations 57 to prevent said supplemental bolts from falling outwardly. Said supplemental bolts carry balls 16 in suitable transverse'bores 59 extending therethrough the balls being retained in said bores by suitable headings as in the preferred formof the invention. As clearly shown in Fig; 10 the lower portions of the bores 59zare inclined inwardly whereby said balls 16 have a tend ency to fall towards each other and into engagementwith the main locking bolt by the action of gravity.

The supplemental bolts 58 are provided with suitable recesses or receptacles each carrying a compression spring 60 bearing against lugs 61 on the main locking bolt, one of. said lugs 61 acting as a stop adapted to engage the extension 33 of the curved link 26 as in the preferred form of the invention.

The outer end of said curved link is pivoted by a pin 62 to the main locking bolt and a spring 63 encircles said pin and the ends thereof engage pins 64 and-65 carried by the bolt 5.2 and link 26 respectively} The function of said spring 63-is the same as in the preferred form of the invention. The bolt 52 also carries a pin 66'the ends of which slidably engage in slots 67 in the supplemental bolts 58.

in the supplemental bolts the balls 16 fall i.n-'

Wardly by the action of gravity and extend partially within the opening 55. Meanwhile the ends of the pin 66 have reached the ends of the slots 67 in the supplemental bolts so 'that a continued rotation of the handle or knob retracts the bolt 52 carrying the bolts 58- with it within the casing, the balls 16 clearing the end wall of the keeper housing in an obvious manner. To project the boltwithin the keeper, the reverse movements of the parts obtain, the continued movement of the bolt 52 after the shoulders 56 have engaged the end walls of the lock casing acting to force the balls 16 outwardly and out of the opening 15.

What I claim as my invention is 1. In a lock, a casing containing the lock- .ing mechanism, a cylinder, a key plug therein, means connecting the key plug and look ing mechanism, means extending from said casing on which saidfcylinder is slidably mounted and means for locking said cylinder on said extending means, said locking means being adapted to be released only when said key plug has been rotated to a predetermined position by means of the proper key therefor. I

2. In a lock, a casing containing the locking mechanism, a cylinder, a key plug therein, means connecting the key plug and looking mechanism, means associated with said casing on 'which said cylinder is slidably and adjustab-ly mounted and means engaging'said key plug and said associated means for locking said cylinder on said associated means and adapted to be released to permit movement of said cylinder only when said key'plug has been rotated to a predeter-' mined position by means of the proper key therefo v 3. In a lock, a casing containing the locking mechanism, a cylinder, a key plug therein, means connecting the key plug and locking mechanism, means associated with said casing on which said cylinder is slidably and adjustably mounted and spring means engaging said key plug and said associated means for locking said cylinder on said associated means in adjusted position and adapted to be released from engagement with said key plug and associated means to permit movement of said cylinder on said associated means only when said key plug has been rotated to a predetermined position by means of the proper key therefor.

4. In a look, a casing containing the locking mechanism, a cylinder, a key plug therein, means connecting the key plug and looking mechanism, means associated with said casing on which said cylinder is slidably and adjustably mounted and provided: withnotches therein and spring means engaging the notches in saidassociated means for holding said cylinder thereon in any desired adjusted position. I

5. In a look, a casing containing the looking mechanism, a cylinder, a key plug there in, means connecting the key plug and looking mechanism, means associated with said casing on which said cylinder is slidably and adjustably mounted and provided with 'notches therein and spring means engaging said key plug and said notches for locking.

has been rotated to a predetermined position by means of the proper key therefor.

6. In a lock, a casing containing the locking mechanism, a cylinder a key plug therein having a flat side, means connecting the key plug and locking mechanism, means associated with said casing on which said cylinder is slidably and adjustably mounted and means adapted to engage the fiat side of said key plug andsaid associated means for lock- I ing said cylinder thereon.

7. In a look, a casing containing the locking mechanism, a cylinder provided with a slot therein, a key plug within said cylinder having a fiat side adapted to register With said slot, means connecting the key plug and locking mechanism, means associated with said casing on which said cylinder is slidably mounted and means adapted to extend within said slot and to engage the flat side of said key plug and said associated means for locking said cylinder thereon.

8. 'In a look, a casing containing the locking mechanism, a cylinder provided with a' slot therein, a key plug within said cylinder, means connecting the key plug and locking mechanism, means associated with said casing on which said cylinder is slidably and adjustably mounted and spring means adapted to extend within said slot and to engage said key plug and said associated means for holding said cylinder in adjusted position thereon.

9. In a look, a casing containing the looking mechanism, a cylinder, 21 head on said cylinder, a key plug in said cylinder, means connecting the key plug and locking mechanism, a rod on said casing slidably receiving said head and means engaging said rod and said key plug for locking said cylinder in position.

10. In a look, .a casing containing the looking mechanism, a cylinder havin a slot therein, a head on said cylinder, a key plug in said cylinder, means connecting the key plug and locking mechanism, a rod on said casing slidably receiving said head and a spring entering the slot in said cylinder and engaging said rod for locking the cylinder in position. 1'

11. In a look, a casing containing the looking mechanism, a cylinder having a slot therein, a pair of heads on said cylinder with a space therebetween, a key plug in said cylinder having a flat side and adapted to register with said slot, means connecting the key plug and locking mechanism, a notched rod.

fastened on saidcasing and slidably receiving said heads and a spring in the space intermediate said heads and entering said slot and engaging said key plug anda notch in said rod for holding the cylinder in position.

12. In a look, a locking bolt, a keeper,

means for actuating said locking bolt to' project it into said keeper and a spherical locking member carried by and movable with said locking bolt, said member being engageable with said keeper to prevent a retraction of said bolt. i

13. In a look, a locking bolt, a keeper, means for actuating said'loclcing bolt to project it into said keeper and retract the same therefrom and a ball associated withsaid locking-bolt and adapted to be thrust outwardly whensaid locking bolt is projected into said keeper by said actuating means.

14. In a look, a locking bolt, a keeper,

means for actuating said locking bolt and a locking device adapted to be thrust outwardly from the side face of said bolt and into locking position when said locking bolt is projected into .said keeper by said actuating means and to fall into normal positionby gravity when said locking bolt is retracted from said keeper.

15. In a look, a locking bolt, a keeper for receiving said locking bolt, a supplemental.

locking bolt, locking means associated with said locking bolt and adapted to be thrust into locked position by said supplemental bolt when said locking bolt isprojected into said keeper and means tending to movesaid locking bolt and supplemental bolt in opposite directions.

16. In a lock, a locking bolt, a keeper for receiving said locking bolt, a supplemental locking bolt slidable on said locking bolt and bolt adapted to actuate said-locking bolt and engaging the same by a sliding contact wherer a spherical locking member associated with said lockin bolt and adapted .to be thrust outwardly y said supplemental bolt when said locking bolt is projected into said keeper.

17. In a look, a locking bolt, a keeper for receiving said locking bolt, asupplemental bolt slidable on said locking bolt, a locking member associated with said locking bolt and adapted to be thrust into locking position by said supplemental bolt when said locking bolt is projected into said keeper and spring means engaging each of said bolts and acting to move them in opposite direc-.v

tions.

18. In a look, a locking bolt, a keeper for receiving said-locking bolt, a supplemental bolt, a locking member associated with said. locking bolt and adapted to be thrust into' locking position by said supplemental bolt bolt, a spherical looking with said-locking bolt and adapted to be receiving said locking bolt, a supplemental I member a'ssociated. s5

forced into locking position by said supplemental bolt when said'locking bolt'is pro-' jected into said keeper and a spring carried by one of said bolts and bearing against the other thereof and acting to move said -bolts inopposite directions.

20. In a look, a locking bolt, a keeper for receiving said locking bolt, a supplemental- "bolt and a locking ball associatedwith said' locking bolt and adapted to be forced into operative position when engaged by said supplemental bolt and to assume an inoperative position when disengaged by said supplemental bolt. 7 v

21. In a'lock, a locking bolt, a keeper for receiving said locking bolt, -aj supplemental bolt and a locking ball associated with said locking bolt and adapted to be thrust outwardly into operative position bysaid supplemental bolt and to fall inwardly by gravity into inoperative. position when disengaged therefrom.

22. In a look, a locking bolt, 'a keeper for receiving said locking bolt, a supplemental bolt and a pair of spherical locking members carried by said locking bolt and adaptedto;

be thrust outwardly away from each other into locking position when said locln'ng bolt is actuated.

23. In a lock, a lockingbolt, a spherical- 1 locking member associated with said bolt, a v

keeper 'forreceiving said locking bolt and a supplemental bolt adapted to actuate said locking bolt and said spherical member when said locking bolt has entered said keeper.

24. In a look, a locking bolt, a keeper for receiving said locking bolt, a supplemental by movement of one bolt' may be effected without movement of the other and a locking member adapted to be actuated by said' supple- 25. In a lock, a locking bolt, a supplemental bolt adapted to actuate said locking. bolt and engaging the same by a sliding contact where by movement of one bolt maybe effected for a given distance without movement of the other and a locking member adapted to be actuated by one of said bolts after the other has reached-apredetermined position in its travel.

26. In a look, a locking bolt, a supplemental bolt adapted to actuate said locking bolt and engaging the same by a sliding'contact whereby movement of one bolt may be effected for a given distance without movement of the other, a spherical locking member adapted to be forced into locking position by one of said bolts after the other has reached a predetermined position in its travel and means foractuating said supplemental bolt.

27. In a lock, a locking bolt, a supplemental bolt adapted to actuate said locking bolt and engaging the same by a sliding contact where'- by movement of one may be efiected for a given distance without movement of the other, a pair of locking balls adapted to be spreadapart and forced into locking position by one of said bolts after the other has reached a predetermined position in its travel, means tending to force said bolts in opposite directions and means for actuating said supplemental bolt.

. 28] In a look, a locking bolt and a supplemental bolt, one of said bolts being provided with a horizontal and atransverse bore therein communicating with each other, a locking member mounted in said transverse bore and 7 means on the other of said bolts" slidably extending within said horizontal bore and adapted to strike-said locking member-and thrust the same outwardly into locking position.

29. In a lock, a'locking bolt provided with horizontal and transverse bores therein communicating with each spherical locking member mounted in said transverse bores and a supplemental bolt adapted to actuate said .locking bolt and provided with plug members entering said horizontal bores and adapted to spread said spherical locking members apart into locking position when said locking bolt enters said keeper. 30. A lock, including, in combination, a bolt, a bolt-projecting member slidable within said bolt, actuating means connected withsaid member, and means whereby upon said actuating means being operated to project saidmember and bolt connected therewith, the latter and said member will initially move as one unit and subsequently be shifted relatively to each other.

31. A look, including, bolt, a bolt-projecting member slidable within said bolt, actuating means connected with said member, and means whereby upon said actuating meansibeing operated to project in combination,' a

said member and bolt connected therewith, the latter and said member will initially move. as one unit, said bolt subsequently ceasing to move, and said member continuing its movements.

32. A look, including, in combination, a bolt, a bolt-shifting member movably associated with said bolt, actuating means connected with said member, means whereby upon said actuating means being operated said member and bolt will initially move as .one unit, said bolt subsequently ceasing to .position beyond the same during said continued movement, and means whereby a return movement of said actuating means will cause said locking means to be rendered inoperative to subsequently retract said bolt.

34. A lock, including, in combination, a bolt projectible into a keeper, supplemental locking means housed within said bolt and projectible beyond the same, and means connected with said supplemental means for actuating the same and projecting said bolt, whereby upon said boltbeing forcibly retracted, said actuating means will remain inoperative, said supplemental locking means preventing a retraction of said bolt from within said keeper. 4

35. A lock, including, in combination, a bolt, supplemental locking means carried by said bolt, means. for rendering said supplemental means operative upon said bolt being projected, means permitting the force of gravity to act'upon said supplemental locking means to render thesame inoperative upon saidbolt being retracted, and means for positively rendering said locking means inoperative.

36. A look, including, in combination, a bolt, means extendible from the side faces of the same and acting to supplement the locking action of said bolt, means for rendering said supplemental locking means operative, means permitting the same to become inoperative, and further means for positively forcing said locking members into inoperative position.

37. A lock, including in combination, a main bolt, a supplemental bolt associated therewith, means for projecting both of said bolts, and means for urging a retraction of one only of said bolts.

38. A device of the character described, including in combination, a bolt, a bolt-projecting member slidably carried within the body of said bolt, and actuating means con-.

stantly and movably connected with said member;

39. A lock, including a bolt, a keeper there- I for, means for actuating said bolt, a plurality of locking means acting under the influence of gravity to be normally housed within said bolt, and means for moving said locking means in opposite directions with respect to each other and beyond the side faces to engage with said keeper and prevent aretrac tion of the bolt therefrom.

40.A lock, including, in combination, a main locking boltfor entry into a keeper, means associated with said bolt and engageable with said .keeper for preventing a retraction of said bolt, a supplemental bolt controllingthe operation of said means, and main bolt-actuating .means constantly connected with said supplemental bolt. i

41. A lock, including a bolt, a keeper therefor, means .for actuating said bolt, a plurality of spherical locking relatively movable means normally housed within said bolt adjacent the sidefacesthereof and mounted for slidable movement in opposite directions, and

means for actuating said-last-named means to engage with said'keeper to prevent a'retraction of the bolt therefrom. 42. A lock, including, in combination, a cylinder and plug rotatable therein, a. lock mechanism connected with said plug and to i be operated by the rotation thereof, means for supporting said cylinder for reciprocation with-respect to said mechanism, and means actuated by said plug for locking said cylin- 49 der against adjustment. F c

43. A lock, including, in combination, a cylinder and plug rotatable therein, a lock mechanism connected with said plug and to beoperated by the rotation thereof, a rod connected with said mechanism and slidably engaging said cylinder to support the latter, and means actuated by said plug and locking said cylinder against movement with respect to said mechanism. 50 44:. A lock, including, in combination, a cylinder and plugrotatable therein, a lock mechanism connected with said plug and to be operated by the rotation thereof, a notched rod connected with said mechanism and slidably engaging said cylinder to support the latter, and means carried by said cylinder and engaging a notch thereof to prevent movement of said cylinder with respect to said mechanism, said plug engaging said lastnamed means to prevent a retraction thereof from within said notch. Signed at New York in the county of New York and State of NewYork, this l ith day of April, A. D. 1922. I SAMUEL SEGAL. 

